CN109781436A - A kind of vehicle drive mode Economic Analysis Method - Google Patents
A kind of vehicle drive mode Economic Analysis Method Download PDFInfo
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- CN109781436A CN109781436A CN201910085016.XA CN201910085016A CN109781436A CN 109781436 A CN109781436 A CN 109781436A CN 201910085016 A CN201910085016 A CN 201910085016A CN 109781436 A CN109781436 A CN 109781436A
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Abstract
The invention discloses a kind of vehicle drive mode Economic Analysis Methods, comprising the following steps: S10, measurement calculate real road resistance of the sample car under different speeds；S20, measurement calculate under sample car difference driving mode, under different accelerator pedal apertures, the corresponding vehicle longitudinal acceleration of different speeds；S30, it calculates under sample car difference driving mode, under different accelerator pedal apertures, the corresponding vehicle driving power of different speeds；S40, pass through real road data, count speed accounting and accelerator pedal aperture accounting, driving energy needed for calculating each driving mode, quantify the economy difference relationship of each driving mode.The present invention can evaluate the economy difference of each driving mode of real road operating condition, moreover it is possible to provide reference for the driving mode design in vehicle performance development process.
Description
Technical field
The present invention relates to the technical field of vehicle economy evaluation more particularly to a kind of vehicle drive mode Economic Evaluations
Method.
Background technique
It is carried out currently, vehicle complete vehicle Economic Evaluation generallys use fixed standard condition.It is pure in new-energy automobile field
For electric car according to GB-T18386, hybrid vehicle all carries out economic testing using NEDC operating condition according to GB-T19753.
During automobile research, different driving modes can be designed to meet the different drive demand of driver.As above
It is described, Economic Evaluation is carried out using NEDC operating condition, but shadow of the different driving modes in driving operating condition to economy can not be embodied
Ring difference.
Therefore a kind of influence evaluation method for quantifying different driving modes in driving operating condition to economy is needed.
Summary of the invention
It is an object of the present invention to provide a kind of vehicle drive mode Economic Analysis Methods, can respectively drive to real road operating condition
The economy difference for sailing mode is evaluated, moreover it is possible to provide reference for the driving mode design in vehicle performance development process.
The present invention solves technical problem and adopts the following technical scheme that
A kind of vehicle drive mode Economic Analysis Method, comprising the following steps:
S10, measurement calculate real road resistance of the sample car under different speeds；
S20, measurement calculate under sample car difference driving mode, under different accelerator pedal apertures, different speed it is corresponding
Vehicle longitudinal acceleration；
S30, it calculates under sample car difference driving mode, under different accelerator pedal apertures, the corresponding vehicle drive of different speeds
Dynamic power；
S40, pass through real road data, count speed accounting and accelerator pedal aperture accounting, calculate each driving mode
Required driving energy quantifies the economy difference relationship of each driving mode.
Further, the driving mode includes NORMAL mode and ECO mode.
Further, under the NORMAL mode and ECO mode driving mode, when accelerator pedal aperture is identical, vehicle is vertical
Reduce to acceleration as speed increases.
Further, in step S30, vehicle driving power meets:
Pdrive=Fdrive×v
Fdrive=M × Acc+Ff
Wherein, Acc is vehicle longitudinal acceleration, unit m/s2；M is entire vehicle design quality, unit kg；FdriveIt is whole
Vehicle driving force, unit N；PdriveFor vehicle driving power, unit kW.
Further, in step S40, vehicle driving energy meets under different driving modes:
Enormal=∑ ∫ Pnormald(t)
Eeco=∑ ∫ Pecod(t)
Eff=Enormal/Eeco
Wherein, EnormnalFor NORMAL mode vehicle driving energy；EecoFor ECO mode vehicle driving energy；Eff is
NORMAL mode and ECO mode economy proportionate relationship.
The invention has the following beneficial effects: the present invention can be to the economy difference of each driving mode of real road operating condition
It is evaluated, moreover it is possible to provide reference for the driving mode design in vehicle performance development process.
Detailed description of the invention
Fig. 1 is the flow chart of vehicle drive mode Economic Analysis Method of the invention；
Fig. 2 is that the practical rolling of the speed of sample car and road in vehicle drive mode Economic Analysis Method of the invention hinders
The curve graph of power；
Fig. 3 is NORMAL/ECO mode vehicle longitudinal acceleration in vehicle drive mode Economic Analysis Method of the invention
Curve graph；
Fig. 4 is that NORMAL/ECO mode vehicle driving power is bent in vehicle drive mode Economic Analysis Method of the invention
Line chart.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to examples and drawings.
Embodiment 1
A kind of vehicle drive mode Economic Analysis Method is present embodiments provided, it can be to the less economical of driving mode
Different carry out quantitatively evaluating, and support in vehicle performance development process to the design of driving mode and appraisal.
A kind of vehicle drive mode Economic Analysis Method meets energy regenerating of the sample car under each driving mode for maximum
Value, i.e., do not consider influence of the energy regenerating to economy.
And the following steps are included:
S10, test calculate real road resistance of the sample car under different speeds；
Certain pure electric vehicle sample car is illustrated in figure 2 in different speed downward drivings, the curve graph of the practical rolling resistance of road.
Wherein curve graph shown in Fig. 2 has been fitted resistance coefficient a, b and c, and meets:
Ff=a+bv+cv2
Wherein, FfFor road resistance, unit N；V is speed, unit km/h.
As shown in Fig. 2, in the present embodiment, road resistance is gradually increased with the increase of speed, wherein the present embodiment
In road resistance coefficient a be 162.23, b 1.3698, c 0.0311.
S20, measurement calculate under sample car difference driving mode, under different accelerator pedal apertures, different speed it is corresponding
Vehicle longitudinal acceleration；
It is illustrated in figure 3 vehicle longitudinal acceleration curve graph of certain pure electric vehicle sample car under different driving modes.It is wherein left
Side is vehicle longitudinal acceleration curve graph of certain pure electric vehicle sample car under NORMAL mode；Right side is certain pure electric vehicle sample car in ECO
Vehicle longitudinal acceleration curve graph under mode.Wherein, under two kinds of driving modes, when accelerator pedal aperture is identical, vehicle is vertical
Reduce to acceleration as speed increases；In the case where identical accelerator pedal aperture and identical speed, two kinds of driving moulds
In formula, the longitudinal acceleration under NORMAL mode is greater than the longitudinal acceleration under ECO mode.
S30, it calculates under sample car difference driving mode, under different accelerator pedal apertures, the corresponding vehicle drive of different speeds
Dynamic power；
It is illustrated in figure 4 the curve graph of vehicle driving power of certain pure electric vehicle sample car under different driving modes, wherein left
Side is the curve graph of vehicle driving power of certain pure electric vehicle sample car under NORMAL mode；Right side is certain pure electric vehicle sample car in ECO
The curve graph of vehicle driving power under mode.
Vehicle driving power meets:
Pdrive=Fdrive×v
Fdrive=M × Acc+Ff
Wherein, Acc is vehicle longitudinal acceleration, unit m/s2；M is entire vehicle design quality, unit kg；FdriveIt is whole
Vehicle driving force, unit N；PdriveFor vehicle driving power, unit kW.
In the present embodiment, under both of which, the timing of accelerator pedal aperture one, vehicle driving power with the variation of speed and
Variation, finally tends to certain certain value；Vehicle in the case where identical accelerator pedal aperture and identical speed, under NORMAL mode
Driving power is consistently greater than the vehicle driving power under ECO mode.
S40, pass through real road data, count speed accounting and accelerator pedal aperture accounting, calculate each driving mode
Required driving energy quantifies the economy difference relationship of each driving mode.
Vehicle driving energy meets under different driving modes:
Enormal=∑ ∫ Pnormald(t)
Eeco=∑ ∫ Pecod(t)
Eff=Enormal/Eeco
Wherein, EnormalFor NORMAL mode vehicle driving energy；EecoFor ECO mode vehicle driving energy；Eff is
NORMAL mode and ECO mode economy proportionate relationship.
In the present embodiment, when the ratio of eff is greater than 1, illustrate under speed and the identical situation of accelerator pedal aperture,
The economy of ECO mode is more preferable；When the ratio of eff is less than 1, illustrate under speed and the identical situation of accelerator pedal aperture,
The economy of NORMAL mode is more preferable；When the ratio of eff is equal to 1, illustrate under speed and the identical situation of accelerator pedal aperture,
The economy of both of which is identical.
Compared with prior art, the invention proposes a kind of completely new vehicle economy evaluative dimensions, can be to driving mould
The economy difference of formula carries out quantitatively evaluating, and supports in vehicle performance development process to the design of driving mode and evaluation work
Make.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (5)
1. a kind of vehicle drive mode Economic Analysis Method, which comprises the following steps:
S10, measurement calculate real road resistance of the sample car under different speeds；
S20, measurement calculate under sample car difference driving mode, under different accelerator pedal apertures, the corresponding vehicle of different speeds
Longitudinal acceleration；
S30, it calculates under sample car difference driving mode, under different accelerator pedal apertures, the corresponding vehicle driving function of different speeds
Rate；
S40, pass through real road data, count speed accounting and accelerator pedal aperture accounting, calculate needed for each driving mode
Driving energy quantifies the economy difference relationship of each driving mode.
2. vehicle drive mode Economic Analysis Method according to claim 1, which is characterized in that the driving mode packet
Include NORMAL mode and ECO mode.
3. vehicle drive mode Economic Analysis Method according to claim 2, which is characterized in that the NORMAL mode
Under ECO mode driving mode, when accelerator pedal aperture is identical, vehicle longitudinal acceleration reduces as speed increases.
4. vehicle drive mode Economic Analysis Method according to claim 1, which is characterized in that in step S30, vehicle
Driving power meets:
Pdrive=Fdrive×v
Fdrive=M × Acc+Ff
Wherein, Acc is vehicle longitudinal acceleration, unit m/s2；M is entire vehicle design quality, unit kg；FdriveFor vehicle drive
Power, unit N；PdriveFor vehicle driving power, unit kW.
5. vehicle drive mode Economic Analysis Method according to claim 1, which is characterized in that different in step S40
Vehicle driving energy meets under driving mode:
Enormal=∑ ∫ Pnormald(t)
Eeco=∑ ∫ Pecod(t)
Eff=Enormal/Eeco
Wherein, EnormalFor NORMAL mode vehicle driving energy；EecoFor ECO mode vehicle driving energy；Eff is NORMAL mould
Formula and ECO mode economy proportionate relationship.
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| CN201910085016.XA CN109781436B (en) | 2019-01-29 | 2019-01-29 | Method for evaluating economical efficiency of automobile driving mode |
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| CN201910085016.XA CN109781436B (en) | 2019-01-29 | 2019-01-29 | Method for evaluating economical efficiency of automobile driving mode |
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Cited By (3)
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| CN113049266A (en) * | 2021-02-19 | 2021-06-29 | 东风汽车集团股份有限公司 | Automobile re-acceleration dynamic property evaluation method and system |
| CN113109056A (en) * | 2021-03-01 | 2021-07-13 | 东风汽车集团股份有限公司 | Method and device for evaluating acceleration performance of vehicle accelerator starting power |
| CN113267353A (en) * | 2021-07-06 | 2021-08-17 | 奇瑞商用车（安徽）有限公司 | Road test method for verifying automobile durability development |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049266A (en) * | 2021-02-19 | 2021-06-29 | 东风汽车集团股份有限公司 | Automobile re-acceleration dynamic property evaluation method and system |
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| CN113109056A (en) * | 2021-03-01 | 2021-07-13 | 东风汽车集团股份有限公司 | Method and device for evaluating acceleration performance of vehicle accelerator starting power |
| CN113109056B (en) * | 2021-03-01 | 2023-04-25 | 东风汽车集团股份有限公司 | Vehicle accelerator starting power acceleration evaluation method and device |
| CN113267353A (en) * | 2021-07-06 | 2021-08-17 | 奇瑞商用车（安徽）有限公司 | Road test method for verifying automobile durability development |
| CN113267353B (en) * | 2021-07-06 | 2024-03-08 | 奇瑞商用车（安徽）有限公司 | Road test method for verifying development of durability of automobile |
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